Furnace-door frame and the like.



L. L.- KNOX.

FURNACE DOOR FRAME AND THE LIKE.

APPLICATIQN FiLED APRA 3.1915.

Eatented 00h 29, ISHS INVENTGR A ,Q www @@mw wl'rmasses nemen LUTHER L. meer, or Brimer/'Un ennnsr LYANA, ASSGNOR TO ELAT-KNOX COM- Speecation of Letters Eatent,

opnemen me@ Apre e, 191e.' 'sei-m1 no. 22eme.

..To @ZZ whom it may concern.'

`Be it Known that l., LUTHER L. Knox, resident of Bellevue, in the count); or' Allegheny andA State of Pennsylvenie have in` ventefln new and Auseful improvement in Furnace-Door Frames and the likej or which the followingis a. full., clear, and exact fle# scription, reference being had to the accom anvinv drnwin'ffs *formino` ort of this .f e n specification, in which:

Fignre 1 is a: iront elevation of e door frame embodying my invention. Figs( 2 and i3y eresections on-tlie line lll-Hond HI-l,'respectively,and

Fig. 4 is @section of a T Jr'tion of the struc! ture illusti ating the manner of assembling the parts. Myinventionhas relation to fornace floor frames, or other ,hollow sheetvnietnl struetures7 in which the `parts composing the structure are united by Welflino.

Theooject of my invention is to provide a s'trllcture o'- this character havinggi. novel Ainterior bracing and reinforcing system or the character which Will avoiclforining per iomtions in theplates or sl1eets torniiiig lthe structure ancl'which is oi' e character to `give the structure e considerable degree of ilexihilityor elasticity.

A further object of my invention. is to provide, o structure of 'this character in which the Welds between the 'parte may be .advantageously located, While, at' the sinne time.g permitting the use of the peculiar hracing and reinforcing system which prefer to employ.

Thel nature of my invention 'will be best understood by reference to the accompanying drawings in which i have shown it' aplolietlto afurnace door frame, and which Will now .be described, it being premised, however,

that various changes can be inode in the de teils of construction and arrangement of the parte, 'Without departing from the spirit and scope of my invent-ion; es defined in theY e'niuenderl claims.

The body of the structure shown in thiss flrevving is 'formeel from en inner/ metal ril-rte or sheet Z enti. the outer plete' orsheet 'The lateral ege portions of 'the plete or sheet i2 are bent outwardly es shown et 2E to form the sitio wells oi the structure. -ihe erclietl door opening e, open at ithol-torn, .is for? eil 'in both plates or Sheets, ti

opening i .l e; being; erger in 'the plete soeet n it is in the 'plate or sheet 2. The edge. portions 5- of tne sheet 2 surrounding the opening Se are bent outwardly to 'form the Walls of saidA opening",v and the extreme'eflge portions aire again bent a my :from seid opening in'to'the pleno of the sheet S to form 'the Welding flange 6. These flanges meet and are atlantecl to he Welflecl to the eclge Wall of the plete 3 around saicl'opening al, as indicated at 7. ln this manner the Weld between the partsl adjacent te the door Vopening is located et some distance iront the openingin the mane ne: :incl for the purpose more fully described in my Patent No. 1,191,519or.A July 8, 1916.

The plate 8 is outwardly offset at each of its edges to forni the floor-guiding projec- 'tions S and is Welded not only tothe flange 6 in the manner just described, but xlso to 'the edges of the lateral 'flanges 2? of the plate The upper portion of theplzite 2 is bent horizontally inward to iorln'the top wall of the struct-nre, being Welded to the upper'eiid of the plate and is also extended to form i the attaching; and lifting enge''."

Seonretl to one of the seid members, ijthe present instance to the member 2, :wel fplw rzxlity of internal projections l0, formed each with a slot ll. Secured to the inner surface of; the other plete, :rre o plu projections l2, Whose hook ends ere'adaptel to engage the slots 1l. The two sets of pro"- j`cetions are preferably welded to the inner surfaces of the respective plates or sheets so to fivoitl any perforations therein.l These projections nre weltletl in place before the inner and outer plates or sheets' :Pre assemrulity ofI hook bled and Welded. The plaies or sheets are' i then hrongrht together in the mener illustrated in Fig. 4, and by longitudinal move nient of one plate or sheet with. respect to the otheri the hooks 12 are -eztusecl to engage the slots il the manner which will be readily or some inn/eral movementof the two niemhere relatively to each other.A This gives,

the struc "e snlicientelesticity Zo enable it stenti the erijoensionventl contraction strains. f

lt *will he note-fl that the form" of two plates vor sheetsis such that the?,7 can be readily assembled in 2l-e illustrated `in.Fig. 4:,wihile,V atthe same time. permitting the weld 7 tofbe made at the desired distance from the door opening.

The structure, may' be provided .with aA cooling fluid, such as water, by any suitable ,n system of connections.

`In the drawinr's, I have shown the sup-plyv pipe- 13 having a branch extendin r of hook members Whose hooks extend in a .direction to engage the slots of said projections by a substantially parallel movement of one of the plates or sheetswith re- .said members havinglifa plurality of hooks secured to its interior surface and the other spect to the plane o tially as described' n y 2. A hollow Water cooled structure comprisin two metal plates or sheets; one of said p ates or sheets having a plurality of the other one; substaninternal slotted.. projections, andthe other :late or sheet having a corresponding numerof hook members whose hooks extend in a directida tol sely engage. the slots of said projections b n subs ntially arallel move-'7'- tes or s eets with rementof one-'ofthe F the other one; substanspect to theplane o tially as described.

8. A hollow water sheet cooling structure 'flormed of. two metal plates or sheets,vone 1 ofsaid plates or sheets having a plurality of internal `slotted projections,lv and the v other plate or sheet having a correspondmg number of hook vmembers adapted 'to engage the slots of said projections, said memers being united to each other by` welded p connections-,- the members having welding .portlons which are brought into welding rebers, eac `of4 said members havlng a. door opening formed therein, the, metal of one of said members flanged to form the wall of the door opening lwith its free portion ,bent in -a direction away from sai opening and. welded 4to the'fother member, one of member having a plurality of slotted projections engaged by said hooks,- said inner and outer members havin edges arranged to be bro t into welding relation to each other by tel movement of one member in a plane substantially arallel their welding f to the plane ofthe other member, su 'l velf mentalso causing ,the ,engagement o Y the hook members .with the slots; substantially as described.

In testimony whereof'l have hereunto set v my hand.

--nurnnannnox 

